Directions Read the terms. Cross out the term that does not belong. Explain why the term does not belong.
7. organizing, tuning fork, predicting
8. technology, chemistry, physics
9. balance scale, Bunsen burner, measurements
10. matter, computers, microwave ovens

a is the correct answer

chemical changes occur when a substance combines with another to form a new substance, called chemical synthesis or, alternatively, chemical decomposition into two or more different substances. these processes are called chemical reactions and, in general, are not reversible except by further chemical reactions. some reactions produce heat and are called exothermic reactions and others may require heat to enable the reaction to occur, which are called endothermic reactions. understanding chemical changes is a major part of the science of chemistry.